Xylem CWM18-H3 Installation, Operating & Safety Instructions
Xylem CWM18-H3 Installation, Operating & Safety Instructions

Xylem CWM18-H3 Installation, Operating & Safety Instructions

C-warm cleghorn waring water storage heater

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WATER STORAGE HEATERS
(CALORIFIERS)
BOATS
for
INSTALLATION,
OPERATING
AND SAFETY
INSTRUCTIONS
To obtain the best performance from your C-Warm water storage heater
please read these instructions carefully. Failure to observe the recommended
procedures may result in damage to equipment or in personal injury, and may
invalidate the supplier's warranty.
© Cleghorn Waring 2017
Issue
3 bar
rated
B
Z/PWL6
DOC597/17

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Summary of Contents for Xylem CWM18-H3

  • Page 1 WATER STORAGE HEATERS (CALORIFIERS) BOATS INSTALLATION, OPERATING AND SAFETY INSTRUCTIONS To obtain the best performance from your C-Warm water storage heater please read these instructions carefully. Failure to observe the recommended procedures may result in damage to equipment or in personal injury, and may invalidate the supplier’s warranty.
  • Page 2: Table Of Contents

    CONTENTS Page no. Introducing your C-Warm water storage heater ......3 Safety ...................... 4 Adapting the engine cooling circuit ..........5 Before you start: pre-installation checks ........... 6 Location ....................6 How to fit an auxiliary header tank if necessary ......7 Fixing the heater in place ..............
  • Page 3: Introducing Your C-Warm Water Storage Heater

    INTRODUCING YOUR C-WARM WATER STORAGE HEATER (CALORIFIER) A C-Warm water storage heater offers a Installation is straightforward. Provided a simple and convenient means of few simple rules are obeyed, your enjoying the benefits of stored hot water heater will give you lengthy service with on board your vessel, at no extra cost in virtually no maintenance.
  • Page 4: Safety

    SAFETY Your C-Warm water storage heater is precautions are required by law for part of an unvented (‘closed’) unvented systems installed in houses in pressurised water system. Most domestic the UK. The requirements are set out in systems in the UK are vented to Building Regulations and local Bye-laws.
  • Page 5: Adapting The Engine Cooling Circuit

    ADAPTING THE ENGINE COOLING CIRCUIT The schematic diagram shows the installation principle. Contact your engine supplier for advice about the recommended connection points on your engine. INDIRECT COOLED ENGINE For maximum flow through the coil, the required, by taking off hot water from a inlet connection should be close to the point (B) downstream of (A) and engine (A) and the discharge...
  • Page 6: Before You Start: Pre-Installation Checks

    BEFORE YOU START Check that you have received Check the dimensions of the the correct C-Warm heater and heater and recheck the accessories. Check immersion dimensions of the space for its heater power and voltage. installation in your boat. Report any damage or discrepancies to your supplier III.
  • Page 7: How To Fit An Auxiliary Header Tank If Necessary

    How to fit an auxiliary header tank if necessary For installations where the upper coil connection is above the level of the engine’s water filling point. Blank the existing header tank by using a flat cap that does not obstruct the overflow pipe. Fit a new expansion tank nearby, at a height just above the top of the C- Warm water storage heater coil.
  • Page 8: Fixing The Heater In Place

    FIXING THE WATER STORAGE HEATER IN PLACE When full of water the heater has a substantial mass. It must be secured firmly in place to prevent damage to the heater and pipework or to the supporting structure, from the effects of rough weather or other shocks of marine use. 1 litre of water 1.
  • Page 9 HORIZONTAL MODELS Either a C-Warm Strap Kit or a C-Warm Bracket Kit (H-series) can be used to secure the heater in place. Leave space under the heater for pipe connections on some models. See dimensions page 23. STRAP KIT BRACKET KIT Use…...
  • Page 10: Connecting The Pipework

    CONNECTING THE PIPEWORK Connecting the coil into the engine C-Warm heaters may be connected cooling circuit into the engine cooling and pressurised water systems with any suitable pipe Use ½” or ¾” bore rubber (car or lorry) material. Most commonly used are: heater hose, obtainable from vehicle accessory suppliers.
  • Page 11: Fitting The Temperature/Pressure Relief Valve

    C-Warm CONNECTION KITS contain Connecting the cold water inlet and connectors suitable for Hep o (ACORN) water outlet into your pressurised water system push-fit pipework. The cold water inlet line should be • C-Warm heaters with ½” BSP fitted with a drain cock, close to the connections require 15mm bore heater, to allow drainage if pipework;...
  • Page 12: Fitting An Electric Immersion Heater

    FITTING AN ELECTRIC IMMERSION HEATER threads on the calorifier and immersion Before fitting the immersion heater, heater with silicone grease. check that your a.c. supply voltage corresponds to that indicated on the Screw in the heater. Remove the heater immersion heater. Remove the dummy cover, bend the cable to one side, fit a boss from the calorifier.
  • Page 13 Wiring Instructions High temperature 1. It is essential that the correct Cut-out set to 85ºC size of fuse or circuit breaker be fitted. 2. Check that the mains supply voltage corresponds with the voltage indicated on the heater. 3. Isolate the electrical supply to the cable.
  • Page 14: Regulating The Temperature Of Engine-Heated Stored Water

    REGULATING THE TEMPERATURE OF THE ENGINE HEATED WATER C-Warm storage heaters are highly efficient, and the stored water can reach almost the same temperature as the water in the engine cooling circuit. (90°-95°C). Domestic hot water is not normally hotter than 60° You can limit the temperature of the hot water supply by: l fitting a C-Warm adjustable thermostat,...
  • Page 15: Hot Water Expansion

    HOT WATER EXPANSION The water in your C-Warm storage heater expands as it heats up. Provided your pressurised system incorporates an accumulator tank, this expansion will be absorbed as it takes place. In the process, a small amount of hot water may flow back into the cold water line. If hot water backflow cannot be tolerated, fit a non-return valve and a separate expansion tank in the cold water supply line to the heater.
  • Page 16: Using The Heater

    USING THE HEATER Check that the pipework is complete test the temperature-and-pressure ● and fully connected. relief valve by rotating the coloured If necessary, refill the engine cooling knob one full turn anticlockwise; system with the recommended water should flow freely from the coolant.
  • Page 17: Problem Solving

    PROBLEM SOLVING PROBLEM POSSIBLE CAUSE ACTION Coil inlet temperature too low Check coil inlet water temperature and correct if necessary Air lock(s) in engine cooling Check for air locks circuit Water not hot enough Top of storage heater above Raise header tank engine cooling header tank Thermostat in engine cooling Check setting on thermostat...
  • Page 18: Table Of Connections And Fitting Sizes

    (gas) T= twin coil thread thread thread thread thread thread thread thread ext. ext. int. ext. ext. ext. ext. int. CWM18-H3 ½” ½” ½” ¾” ¾” 2¼” CWM21-V3 ½” int. ½” int. ½” ¾” ¾” 2¼” CWM29-V3 ½” ½” ½”...
  • Page 19 HORIZONTAL MODELS See Table, page 18 NOT TO SCALE...
  • Page 20 VERTICAL MODELS See Table, page 18 NOT TO SCALE...
  • Page 21: Warranty

    The foregoing warranty is given without prejudice to purchasers’ statutory rights. MANUFACTURED IN THE UK FOR: Xylem Water Solutions UK Ltd Bingley Road Telephone: +44 (0)1462 480380 Hoddesdon...

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